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Evaluation of using swarm intelligence to produce facility layout solutions.

机译:使用群体智能生成设施布局解决方案的评估。

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摘要

The facility layout problem is a combinatorial optimization problem that involves determining the location and shape of various departments within a facility based on inter-department volume and distance measures. An optimal solution to the problem will yield the most efficient layout based on the measures.; The application of Particle Swarm Optimization (PSO) was recently proposed as an approach to solving the facility layout problem. With PSO, potential solutions are produced by dividing departments into swarms of Self-Organizing Tiles (SOT). By following a set of simple behavioral rules based on social information gathered from the environment, the tiles cooperate to produce solutions in a very short amount of time. Initial results provided improvements over CRAFT, one of the primary methods currently used for facility layout.; The main contribution of this thesis work entails evaluating the use of swarm intelligence to produce optimal facility layouts as well as the use of shape measures to assess the quality of produced layouts. The major achievement of this thesis is the design and implementation of a tool that could produce facility layout solutions using Self-Organizing Tiles (SOT). This thesis advances the swarm paradigm by introducing alternative pathways for achieving contiguity of departments.; This thesis utilizes the tool to examine the convergence of SOT on an enumerated optimum for a layout dataset, which requires the exhaustive evaluation of all permutations of a grid layout. The tool was also used to examine the effect of granularity on the ability of SOT to converge on facility layout solutions. A shape metric was utilized as a means of evaluating the quality of produced solutions based on the regularity of the shape of departments, and found that SOT produces fairly regular layouts when granularized to nine tiles per department. Finally, SOT was compared with other algorithms the experimental results revealed that SOT provided minor improvements over currently used methods.
机译:设施布局问题是组合优化问题,涉及根据部门间数量和距离度量确定设施中各个部门的位置和形状。解决问题的最佳方法将根据这些措施产生最有效的布局。最近提出了应用粒子群算法(PSO)作为解决设施布局问题的方法。使用PSO,通过将部门划分为大量的自组织磁贴(SOT),可以产生潜在的解决方案。通过遵循基于从环境中收集的社交信息的一组简单的行为规则,图块可以在很短的时间内协作以产生解决方案。初步结果提供了对CRAFT的改进,CRAFT是当前用于设施布局的主要方法之一。本论文工作的主要贡献在于评估群体智能的使用,以产生最佳的设施布局,以及使用形状度量来评估生产的布局的质量。本文的主要成就是设计和实现了一种工具,该工具可以使用自组织磁贴(SOT)生成设施布局解决方案。本文通过引入实现部门连续性的替代途径,推进了群体范例。本文利用该工具在布局数据集的枚举最优值上检查SOT的收敛性,这需要对网格布局的所有排列进行详尽的评估。该工具还用于检查粒度对SOT收敛于设施布局解决方案的能力的影响。形状度量被用作根据部门形状的规律性评估生产解决方案质量的一种手段,并且发现当将SOT细化为每个部门9个图块时,SOT会生成相当规则的布局。最后,将SOT与其他算法进行了比较,实验结果表明,与当前使用的方法相比,SOT进行了较小的改进。

著录项

  • 作者

    Thai, Andrew Bao.;

  • 作者单位

    University of Louisville.;

  • 授予单位 University of Louisville.;
  • 学科 Engineering Industrial.; Artificial Intelligence.
  • 学位 M.Eng.
  • 年度 2007
  • 页码 61 p.
  • 总页数 61
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 一般工业技术;人工智能理论;
  • 关键词

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